Try running this piece of javascript, it would throw a “URI malformed” exception.

javascript:alert(decodeURIComponent(escape(’http://rushis.com/®’)));

The ® character is transformed to %AE, which is not a valid input to decodeURIComponent function.
This issue is clearly evident in the latest prototype js 1.6 framework.

_getHeaderJSON: function() {
var json = this.getHeader(’X-JSON’);
if (!json) ....
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